调亏灌溉对苜蓿产量品质效应的荟萃分析
Meta-analysis of effects of regulated deficit irrigation on yield and quality of alfalfa
许立婷 1齐广平 1康燕霞 1银敏华 1马彦麟 1贾琼 1汪精海 1姜渊博1
作者信息
- 1. 甘肃农业大学水利水电工程学院,甘肃兰州 730070
- 折叠
摘要
为探究不同影响因素条件下苜蓿产量和品质对调亏灌溉的响应,为苜蓿种植提供理论依据,通过整合已发表的相关田间试验数据,采用荟萃分析(meta-analysis),定量研究以充分灌溉为对照的调亏灌溉下苜蓿产量、品质的综合效应及其主要影响因素.结果表明:与充分灌溉相比,调亏灌溉的苜蓿产量降低19.3％(95％置信区间-22.5％～16.0％),但品质极显著(P＜0.01)提升,粗蛋白含量平均提高14.5％(95％置信区间12.4％～16.6％),酸性洗涤纤维和中性洗涤纤维含量分别平均降低10.8％(95％置信区间-12.3％～-9.2％)和13.2％(95％置信区间-14.4％～-11.9％).综合产量和品质效应,在年平均气温0～5 ℃和＞10～15 ℃、年降水量＜200 mm和＞400～800 mm的地区,种植密度＞20～25 kg·hm-2时,调亏灌溉有利于苜蓿稳产,且品质较高.在不同的农业生产区,以滴灌配合分生育期调亏、调亏度75％～85％(以田间持水量为基准)能够维持苜蓿较优的生产效应.
Abstract
To explore the response of alfalfa yield and quality to regulated deficit irrigation under different influencing factors and provide theoretical basis for alfalfa planting,the comprehensive effect was quantitatively studied in the present study,as well as the main influencing factors under regulated deficit irrigation with full irrigation as the con-trol by integrating published relevant field test data and using meta-analysis method.The results showed that,com-pared with the full irrigation,the yield of alfalfa under regulated deficit irrigation decreased by 19.3％(95％confi-dence interval:-22.5％-16.0％),but the quality was significantly(P＜0.01)improved.The crude protein con-tent was increased by 14.5％(95％confidence interval:12.4％-16.6％),while the acid detergent fiber content and neutral detergent fiber content were decreased by 10.8％(95％confidence interval:-12.3％--9.2％)and 13.2％(95％confidence interval:-14.4％--11.9％),respectively.Given the yield and quality effects,annu-al average temperature of 0-5 ℃ and＞10-15 ℃,annual precipitation of＜200 mm and＞400-800 mm,the regulated deficit irrigation would be conducive for the alfalfa yield and quality with planting density of＞20-25 kg·hm-2.In different agricultural production areas,the regulated deficit irrigation with drip irrigation,regulated deficit at different growth period,and a regulated deficit degree of 75％-85％(based on the field capacity)would main-tain sound production effect of alfalfa.
关键词
苜蓿/调亏灌溉/产量/品质/荟萃分析Key words
alfalfa/deficit irrigation/yield/quality/meta-analysis引用本文复制引用
基金项目
国家自然科学基金(51969003)
国家自然科学基金(52069001)
甘肃省高等学校产业支撑计划(2021CYZC-20)
甘肃省高等学校青年博士基金(2022QB-088)
甘肃省高等学校创新基金(2022B-101)
甘肃省高等学校创新基金(2021CXZX-405)
甘肃农业大学水利水电工程学院科研团队建设专项(Gaucwky-01)
出版年
2024
NETL
NSTL
万方数据